Probabilistic evaluation of mobile source air pollution: Volume 1 -- Probabilistic modeling of exhaust emissions from light duty gasoline vehicles. Final report, 1 August 1994--31 May 1997
Emission factors for light duty gasoline vehicles (LDGV) are typically developed based upon laboratory testing of vehicles for prescribed driving cycles. In this project, selected LDGV data sets and modeling assumptions used to develop Mobile5a were revisited. Probabilistic estimates of the inter-vehicle variability in emissions and the uncertainty in fleet average emissions for selected vehicle types and driving cycles were made. Case studies focused upon probabilistic analysis of base emission rate and speed correction estimates used in Mobile5a for throttle body and port fuel injected vehicles. Based upon inter-vehicle variability in the data sets and a probabilistic model in which the standard error terms of regression models employed in Mobile5a are also considered, the uncertainty was estimated for average emission factors for the selected fleets of light duty gasoline vehicles. The 90 percent confidence interval for the average emission factor varied in range with pollutant and driving cycle.
- Research Organization:
- Center for Transportation and the Environment, Raleigh, NC (United States); North Carolina State Univ., Dept. of Civil Engineering, Raleigh, NC (United States); Department of Transportation, Washington, DC (United States); Southeastern Transportation Center Consortium, Raleigh, NC (United States)
- Sponsoring Organization:
- DOT; Department of Transportation, Washington, DC (United States)
- OSTI ID:
- 6152527
- Report Number(s):
- PB-99-146292/XAB
- Resource Relation:
- Other Information: See also PB95-170239
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR POLLUTION
CARBON MONOXIDE
EXHAUST GASES
HYDROCARBONS
M CODES
MOBILE POLLUTANT SOURCES
NITROGEN OXIDES
PROBABILISTIC ESTIMATION
REGRESSION ANALYSIS
VEHICLES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COMPUTER CODES
FLUIDS
GASEOUS WASTES
GASES
MATHEMATICS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POLLUTION SOURCES
STATISTICS
WASTES
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)